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प्रश्न
Explain this term associated with rocks: Extrusive Igneous Rocks
उत्तर
These rocks are formed by consolidation of erupted magma on the surface of earth.
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| A. | Basalt | 1. | Anthracite |
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| Group A | Group B | ||
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
